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Title: Electroweak Baryogenesis from Dark-Sector C P Violation

Abstract

We present a novel mechanism of electroweak baryogenesis where C P violation occurs in a dark sector, comprised of standard model gauge singlets, thereby evading the strong electric dipole moment constraints. In this framework, the background of time-like component of a new gauge boson $$Z^\prime_\mu$$, generated at electroweak temperatures, drives the electroweak sphaleron processes to create the required baryon asymmetry. We first discuss the crucial ingredients for this mechanism to work, and then show that all of them can be elegantly embedded in ultraviolet completions with spontaneously broken gauged lepton number. The models under consideration have a rich phenomenology and can be experimentally probed in leptophilic $$Z^\prime$$ searches, dark matter searches, heavy Majorana neutrino searches, as well as through hunting for new Higgs portal scalars in multi-lepton channels at colliders.

Authors:
 [1];  [2];  [3]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
  2. Univ. of Notre Dame, Notre Dame, IN (United States); The Barcelona Institute of Science and Technology (BIST), Bellaterra (Barcelona) (Spain)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Northwestern Univ., Evanston, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1515598
Alternate Identifier(s):
OSTI ID: 1489392
Report Number(s):
arXiv:1811.09719; FERMILAB-PUB-18-636-T
Journal ID: ISSN 0031-9007; PRLTAO; 1704944
Grant/Contract Number:  
AC02-07CH11359; FG02-13ER41958; SC0009924
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 20; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Carena, Marcela, Quirós, Mariano, and Zhang, Yue. Electroweak Baryogenesis from Dark-Sector CP Violation. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.201802.
Carena, Marcela, Quirós, Mariano, & Zhang, Yue. Electroweak Baryogenesis from Dark-Sector CP Violation. United States. doi:10.1103/PhysRevLett.122.201802.
Carena, Marcela, Quirós, Mariano, and Zhang, Yue. Fri . "Electroweak Baryogenesis from Dark-Sector CP Violation". United States. doi:10.1103/PhysRevLett.122.201802.
@article{osti_1515598,
title = {Electroweak Baryogenesis from Dark-Sector CP Violation},
author = {Carena, Marcela and Quirós, Mariano and Zhang, Yue},
abstractNote = {We present a novel mechanism of electroweak baryogenesis where CP violation occurs in a dark sector, comprised of standard model gauge singlets, thereby evading the strong electric dipole moment constraints. In this framework, the background of time-like component of a new gauge boson $Z^\prime_\mu$, generated at electroweak temperatures, drives the electroweak sphaleron processes to create the required baryon asymmetry. We first discuss the crucial ingredients for this mechanism to work, and then show that all of them can be elegantly embedded in ultraviolet completions with spontaneously broken gauged lepton number. The models under consideration have a rich phenomenology and can be experimentally probed in leptophilic $Z^\prime$ searches, dark matter searches, heavy Majorana neutrino searches, as well as through hunting for new Higgs portal scalars in multi-lepton channels at colliders.},
doi = {10.1103/PhysRevLett.122.201802},
journal = {Physical Review Letters},
number = 20,
volume = 122,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevLett.122.201802

Citation Metrics:
Cited by: 2 works
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Figures / Tables:

Table I Table I: UV completion of the effective theory.

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      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.